Finding the Fourth Proportional to 2,230.31, 3,077.83 and 1,298.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,230.31 : 3,077.83 = 1,298.81 : x
2. Step 2: Convert to fraction form
   2,230.31/3,077.83 = 1,298.81/x
3. Step 3: Cross multiply
   2,230.31x = 3,077.83 × 1,298.81
4. Step 4: Simplify right side
   2,230.31x = 3,997,525.70
5. Step 5: Solve for x
   x = 3,997,525.70/2,230.31
6. Step 6: Final answer
   x = 1,792.36